Ok, so after spending a while with EA Customer Service, and a REALLY nice representative I can't remember the name of, we figured it out.
About 2 days after the patch came out a new driver update came out for my NVIDIA card. THAT is what cause my game to crash every time I tried to save after building walls.
After updating my driver it did fix the problem, but I still had to start a new save file, because the old one was permanently corrupted.
All you have to do to update is go into your device manager in your control panel and find out what INVIDIA card you have. (if that is in fact the type of card you're using.) Then go to the NVIDIA website, click on the Drivers link, and type in the type of card you have. (Mine is an NVIDIA GeForce GTS 450) When you type in your card info it will pull up the most recent update for you and you can download it strait from their site.
